Williams OK with month of wearing pink

Like the rest of the NFL’s players, 49ers wide receiver Kyle Williams will sport pink on game days in October in honor of Breast Cancer Awareness Month.

Unlike many players, however, the pink cleats and gloves Williams wore in Sunday’s 45-3 win over the Bills had special meaning. In 2005, Williams’ grandmother, Sonya Broyard, died from the disease.

After he caught a 43-yard touchdown from Alex Smith in the second quarter, Williams fell to his knees and pointed to the sky.

“It was for my grandmother,” Williams said. “I always look forward to the whole month and being able to support it and wear pink. I was just saying hello. She was my rock.”

Kaepernick returns: Backup quarterback Colin Kaepernick lined up at wide receiver, threw a 7-yard completion and capped his four-carry, 39-yard performance with a 16-yard touchdown run in the fourth quarter.

In other words, the Bills knew San Francisco’s “WildKaep” package was coming after the second-year backup rushed for 50 yards and a score in Week 4 against the Jets, but they couldn’t stop it.

“Sometimes there’s confusion,” Kaepernick said of the defense’s reaction when he enters the game. “Sometimes it just messes with their responsibilities.”

Kaepernick was responsible for the 49ers’ turnover. Lined up at wide receiver, he swept down the left side for 6 yards and fumbled at Buffalo’s 17-yard line late in the second quarter. Kaepernick was absolved three plays later when linebacker Patrick Willis forced a Buffalo fumble that safety Dashon Goldson recovered.

Smith’s sprained finger:Smith had a bandage on the middle finger of his throwing hand after the game and he termed the injury a sprain, which he didn’t seem to consider serious. Smith, who had his finger X-rayed, was injured in the fourth quarter, shortly before he exited the game.

Briefly: Running back Brandon Jacobs, who has declared himself recovered from a knee injury sustained in the preseason, was inactive. Without Jacobs, who was to be the 49ers’ short-yardage back, Frank Gore was stuffed early in the game for no gain on consecutive plays at Buffalo’s 1-yard line, and San Francisco settled for a 19-yard field goal from David Akers. … Akers’ kick gave him a field goal in 21 straight games, tying Bruce Gossett‘s franchise record (1970-72). … Undrafted rookie tight end Garrett Celek, brother of Eagles tight end Brent Celek, had his first reception, a 4-yard toss from Smith in the third quarter.